You've got schematics? Soooo jealous! Been trying to order some for a while from Mike Paczak and it got mixed up and I got the "Moon Shot" pinball schematics instead. Still trying to sort that out. I can't remember whom has what, do you still have the game and schematics? I'm also trying to piece together my 1,000's score reel. It's there but the wiring is all screwy.
From what I gather off those schematics, any time the game is running it makes the beeping sound? If that's the case I may be able to handle this all via a different method. I'll have to figure out which unit is the "miss shot disc" and which one is the "target animation unit" to figure out what is really missing. I could potentially handle it all with an arduino. From what I gather, any time the game is running it makes the beeping sound?
If you want, maybe e-mail the video to me? Hans@siegecraft.us
Thinking back when it was still registering hits, I did see the flashing star come and go, so I think that the "Miss Shot Unit" is fine. It's the "Target Animation Unit" that's all busted up. Which looks like all that controlled was the timing and rate of the beep.